<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
            <div class="button">{{this.currentCity}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title">热门城市</div>
        <div class="button-list">
          <div class="button-wrapper" v-for="item of hotCities" :key="item.id">
            <div class="button" @click='handleClickCity(item.name)'>{{item.name}}</div>
          </div>
        </div>
      </div>
      <div class="area" v-for="(item,key) of cities" :key="key" :ref="key">
        <div class="title">{{key}}</div>
        <div class="item-list" v-for="innerItem of item" :key="innerItem.id">
          <div class="item" @click='handleClickCity(innerItem.name)'>{{innerItem.name}}</div>
        </div>
      </div>
    </div>
  </div>
</template>
<script>
import Bscroll from 'better-scroll'
import { mapState, mapMutations } from 'vuex'
export default {
  name: 'CityList',
  props: {
    cities: Object,
    hotCities: Array,
    letter: String
  },
  computed: {
    ...mapState({
      currentCity: 'city'
    })
  },
  data () {
    return {
    }
  },
  methods: {
    handleClickCity (city) {
      this.changeCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper, {click: true})
  },
  watch: {
    letter () {
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  }
}
</script>
<style lang='stylus' scoped>
  @import '~styles/varibles.styl'
  // .border-topbottom
  //   &:before
  //     border-color: red
  //   &:after
  //     border-color: red
  // .border-bottom
    // &:before
    //   border-color: red
  .list
    overflow: hidden
    position: absolute
    top: 1.58rem
    left: 0
    right: 0
    bottom: 0
    .title
      line-height: .54rem
      background #eee
      padding-left: .2rem
      color: #666
      font-size: .26rem
      border-top .01rem solid #ccc
      border-bottom .01rem solid #ccc
    .button-list
      padding: .1rem .6rem .1rem .1rem
      overflow: hidden
      .button-wrapper
        float: left
        width: 33.33%
        .button
          text-align: center
          margin: .1rem
          border: .02rem solid #ccc
          padding: .1rem 0
          border-radius: .06rem
    .item-list
      .item
        line-height: .76rem
        padding-left: .2rem
        border-bottom .01rem solid #ccc
</style>
